Anyone else experience a complete failure of Frontline Plus for their cats?

I put a full dose on each cat about 2 weeks ago and the poor kitties are really struggling. Fleas fleas fleas. As if the Frontline Plus had no effect -- the last time I used it, the cats were fine. This time - about 5-6 weeks after the last Frontline dose, the cats still have fleas, and not just one or two. We had a really very hot few days here, and I know heat can make things worse - but not if Frontline is in the cat's system, right?

I have also investigated Revolution, but that product doesn't seem to protect against ticks, unfortunately.

4. Someone told me that Advantage and Fronline are not as effective as they used to be.

I haven't verified this myself with my own cat, nor have I read any official statement or heard any veterinarian say it. Just someone who has cats told me that fleas are starting to build up an immunity to these products. This is just hearsay though, I have no evidence to back it up.

Scritch-scratches to Sonia! Ivan, the big ole' (former) tomcat we adopted years ago after he blew onto our back porch after hurricane Ivan, is miserable if he doesn't get to lounge in the front yard every day. If I could convince him that inside was better, I would.

A flea comb has teeth that are very close together and will trap the fleas. You can then smash them, they pop, or drown them. Cats can become anemic from fleas, and my cats love to be combed, so it is a win win.

And second, is it possible your cats are getting re-infested due to fleas in the environment? Maybe a colony of fleas have set up housekeeping in a carpet, or a kitty bed, or something like that. Or, if they go outside, maybe they are picking up more outside. But if you have some kind of inside source, you need to attend to those fleas too, otherwise you'll have this cycle going on for quite a while.

On edit: Have been using Frontline Plus quite successfully for a few years now on the Florida Gulf Coast for a longhair and a shorthair. Have used both Revolution and Advantage further back in time. They all seem to work well enough, but the cats seem to tolerate the Frontline Plus a little better.

I put every item of cat bedding through the wash, with lysol added, immediately after I put the Frontline on the cats -- our one cat who goes out during the day just hangs out on the porch, mostly. He doesn't seem to travel to high-flea areas, but he's dosed just like all the other kids are.

I used to dog-sit my brother's dog every year for 3 weeks in July. He had the worst fleas imaginable. Listening to him scratch was like fingernails on a chalkboard. I took him to the vet got Frontline, bombed the house (twice during the 3 weeks, bathed him almost daily and still barely a dent. I knew my brother would never bother continuing the clean-up and subsequent doses of Frontline but I really thought I should have been able to at least get things under control in three weeks. No such luck. Fleas can be persistent.

My indoor cat has fleas this year. He has a few bumps around his neck from scratching. I just got Advantage and will apply it as soon as I can wrestle him into position to apply without hitting a raw spot. My vet had recommended Advantage because he is indoor and thus probably won't be exposed to ticks so we might as well use as few chemicals as possible. My brief internet research led me to believe Bio-Spot may not be worth the money savings over Advantage. Neither Bio-Spot or Advantage will guard against ticks but it may be worth chancing it for a month to see if they control the fleas better.

We have a bad flea infestation in the house right now that we're trying to resolve with food grade DE and boric acid. We put frontline on both of the kitties and one is fine, no problem and very few fleas on her. The other had a weird reaction. She lost fur around her neck in spots and has all kinds of crusties around her neck. This all developed within a couple of days of application. I grabbed her and bathed her and she's doing much better now. Using the flea comb on her instead now.

The odd thing is that both of them had the frontline last year and did just fine. No adverse reactions at all.

Both of the dogs stay outside and have gotten the frontline and preventic collars and are doing fine.

We live in the country and the fleas have just been horrible here this year. No concrete driveway or cement sidewalks so we have to walk through the grass as we come and go. Hubs keeps the grass down around the house and the areas we have to walk through. We have no carpet, either. Seems like all we can do is just try to stay even with them at this point until winter arrives.

Advantage seems to be working for him. I found 15 dead fleas around his favorite places. I don't know how he gets fleas and I couldn't see any when I searched him but I know the symptoms.

He probably didn't have a bad infestation by most people standards but it was the worst I have seen him as far as raw spots where he has been scratching around his neck. I know 1 day is not much of a test but Advantage seems to work just like it always has.

So my score using Advantage on the cat and Frontline on the dog is is Advantage=5 for 5 Frontline=0 for 2.

two weeks ago. It doesn't kill the eggs but did the live ones. We then bathed him, thoroughly combed him, and got him a flea collar. STILL some fleas but will use the Frontline stuff on the nape of his neck next week. Hopefully, we have hit all bases. Good luck!

I have 7 dogs and 3 cats. The cats do not go outside, but their brothers the dogs do, so they can bring in fleas and ticks. Three of the big dogs are outside 75% of the time. Zero fleas or ticks on them. The small dogs have had to use Confortis and Frontline. Don't know why Frontline alone wasn't working on them to get rid of the fleas.

We have feral cats also and still no flea problem out in the yard. Don't know why, just glad. Used to have huge tick and flea problem til I faithfully started using the Frontline.

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